I need to know how to save input as a variable for later use.

Here is the code so far:

import java.awt.event.*;

import javax.swing.*;

import java.awt.*;

public class TextGUI extends JFrame{

     public TextGUI(){

          super("Text Test");

          setLayout(new FlowLayout());

          JTextField test = new JTextField("Enter text", 30);

          add(test);

          JButton OK = new JButton("OK");

          add(OK);

          HandlerClass handler = new HandlerClass();

          OK.addActionListener(handler);

               }

     private class HandlerClass implements ActionListener{

          public void actionPerformed(ActionEvent event){

          }

     }

}